Post Rsync Migration Apt Not Recognizing Installed Packages

My server was recently migrated via rsync, while everything appears to work correctly apt doesn't recognize the existence of some packages and services.

Question:
Is there a way to 'refresh' apt so that it will recognize all packages and services currently on the server?

Example of the problem
This shows php7.4-fpm is installed and currently running

root@admin:~# service php7.4-fpm status
● php7.4-fpm.service - The PHP 7.4 FastCGI Process Manager
     Loaded: loaded (/lib/systemd/system/php7.4-fpm.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2022-02-21 20:10:25 CST; 20h ago
       Docs: man:php-fpm7.4(8)
    Process: 1339 ExecStartPost=/usr/lib/php/php-fpm-socket-helper install /run/php/php-fpm.so>
   Main PID: 915 (php-fpm7.4)
     Status: "Processes active: 0, idle: 2, Requests: 1236, slow: 0, Traffic: 0req/sec"
      Tasks: 3 (limit: 4612)
     Memory: 3.9M
     CGroup: /system.slice/php7.4-fpm.service
             ├─ 915 php-fpm: master process (/etc/php/7.4/fpm/php-fpm.conf)
             ├─1326 php-fpm: pool www
             └─1327 php-fpm: pool www

Whereas this shows apt doesn't recognize the php7.4 package (same is true for apache, mysql, etc.)

root@admin:/etc/apt# apt remove php7.4-fpm 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'php7.4-fpm' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Assistance appreciated

Solutions that I have tried

#rm /var/lib/apt/lists/lock
#rm /var/lib/dpkg/lock
#rm /var/lib/dpkg/lock-frontend
#dpkg --configure -a
#apt clean
#apt update --fix-missing
#apt install -f
#dpkg --configure -a
#apt upgrade
#reboot

Literally, everything is functioning properly.. only apt doesn't recognize that my packages exist.